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Smile23 Smile23
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Posts: 9
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3 years ago
A typical automobile engine uses a lead-acid battery. During discharge, the following chemical reaction takes place: Pb (s) + PbO2 (s) + 2H2SO4 Rightwards Arrow 2PbSO4 (aq) + 2H2O (I)
Determine the enthalpy change of this reaction, given the following equations:

1) Pb (s) + PbO2 (s) + 2SO3 (g) Rightwards Arrow 2PbSO4 (s)   ΔH°= -775 kJ

2) SO3 (g) + H2O (I) Rightwards Arrow H2SO4 (I)   ΔH°= -133 kJ
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